PSEB SS Home Science common mistakes
PSEB SS Home Science · Understand the traps and how to avoid them.
Writing the definition of a term (e.g. balanced diet, weaning, food preservation) in loose everyday words instead of the textbook definition with its key components, so the examiner cannot award the component marks.
Candidates revise by reading notes passively and recognise the term, so under exam pressure they reconstruct it from memory in their own words and omit the qualifiers (e.g. 'all nutrients in correct proportion and adequate amount for the body's needs').
What to do instead
For every major term in the syllabus, write a one-line definition card listing its required components (nutrients, proportion, adequacy, age/activity) and practise reproducing it from memory in 30 seconds; check off each component after writing it in the answer.
Answering 'functions of a nutrient' questions with a list of food sources, or answering 'sources' questions with functions, because the two are conflated.
Nutrients are taught in blocks (sources, functions, deficiency) and candidates memorise them as one undifferentiated paragraph rather than as separate examinable heads.
What to do instead
Build a three-column table for each nutrient (sources / functions / deficiency disease) and practise past-style questions by first circling the command word ('state functions', 'list sources') before writing only that column.
Naming a deficiency disease without its causative nutrient and characteristic signs, e.g. writing only 'anaemia' or only 'rickets' with no mention of iron/haemoglobin or vitamin D/calcium and bone deformity.
Disease names are memorable and feel sufficient, so candidates stop at the label and lose the marks attached to cause and symptoms.
What to do instead
Use a fixed three-part answer format for every deficiency: nutrient lacking, disease name, two visible signs; rehearse this for iron, iodine, vitamin A, vitamin D, calcium, protein and vitamin C.
Treating practical-record questions (stain removal, stitching samples, food preparation records) as theory and writing general prose rather than the required step-by-step procedure with materials, method and precautions.
Candidates prepare practicals only by doing them in the lab and never practise writing them, so they cannot convert muscle memory into an ordered written answer.
What to do instead
After each practical, write a short record in the exam format: aim, materials/apparatus, procedure in numbered steps, observation, precaution; keep these records and revise from them rather than from the textbook.
Giving a single generic precaution such as 'be careful' or 'handle carefully' where the question asks for specific precautions in food preparation, stain removal or first aid.
Precautions are taught orally as asides during demonstrations and are not written down, so only a vague phrase survives to the exam.
What to do instead
Maintain a precautions list per activity (e.g. for stain removal: test on hidden hem, use cold water for protein stains, blot not rub; for cooking: control heat, avoid over-cooking to protect nutrients) and quote two or three activity-specific ones per answer.
Skipping or mis-drawing labelled diagrams (stitch diagrams, meal-plan charts, food-group pyramids, first-aid positioning) and writing labels as a sentence instead of arrows on a figure.
Diagrams are perceived as optional decoration, and candidates lack practice in drawing them quickly and neatly under time pressure.
What to do instead
Practise a short list of high-frequency diagrams until each takes under two minutes, always with title, neat pencil lines and labels outside the figure; allocate a fixed slot in the answer for the diagram before writing the explanation.
Producing a meal plan that ignores the stated budget, age group, season or occasion, and lists only dish names without quantities, food groups or justification.
Candidates memorise one 'good meal' and reproduce it regardless of the constraints in the question, missing that the marks lie in adapting to the given conditions.
What to do instead
Answer meal-plan questions in a fixed template: identify the group and their needs, list dishes by food group with approximate quantities, cost the items against the budget, then add one line justifying each choice (e.g. seasonal vegetable for vitamin C and cost).
Confusing the stages of the family life cycle and the nutritional needs at each stage, e.g. applying adult requirements to an infant, or recommending the same diet for a pregnant woman and an elderly person.
The stages are studied as separate chapters and never compared, so the distinctions blur and candidates default to general adult advice.
What to do instead
Make a single comparison chart across infancy, preschool, school age, adolescence, pregnancy/lactation and old age, with columns for key nutrient emphasis, consistency of food and foods to avoid; revise this chart as one unit before the exam.
Leaving calculation-type questions (energy requirement, BMI, cost of a recipe, quantity scaling for a different number of persons) unattempted or answered without showing the formula and steps.
Numerical work is avoided during revision because it feels harder than descriptive content, and candidates do not know whether method marks are available.
What to do instead
Practise a small set of standard calculations until each is automatic: write the formula first, substitute values with units, then state the result with its unit; even a partly correct method earns credit, so never leave the page blank.
Mismanaging the paper: spending too long on the first long answer, then writing one-line answers to the short-answer and objective sections, and omitting the choice-based questions entirely.
Candidates write answers in the order printed rather than by mark value, and underestimate how much time the objective and very-short-answer sections consume.
What to do instead
In the first five minutes, mark each question with its marks and attempt in descending efficiency order (objective and short answers first, long answers next), keeping a fixed time budget per mark and leaving ten minutes to check that no question or sub-part is unanswered.